Paper-cutter.



M. NELSON."

PAPER CUTTER.

APPLICATION FILED OUT. 18, 1913.

1 1 16 834 Patented Nov. 10, 1914.

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THE NORRIS PETERS Cc. FHOTO'LITHO." WASHINGTON. D, C.

MEYNARDIE NELSON, or LITTLETON, NORTH CAROLINA.

PAPER-CUTTER. 7

Specification of Letters Patent. 1 .Patented N 10, 1914,.

Application filed October 18,1913. Serial No. 795,826.

To all whom it may concern:

Be it known that I, MEYNARDIE NELsoi a citizen of the United States, andresident of Littleton, in the county of Halifax and State of NorthCarolina, have invented cer-' tain new and useful Improvements inPaper-Cutters, of which the following is a specification.

This invention relates to paper cutters such as are adapted to be usedinstores, for carrying rolls of wrapping paper-and cutting the desiredlengths of paper from the rolls. V

My invention has particular relation to vertical paper cutters of theclass just men tioned, and it consists in certain improvements inthecutter of the particular type shown in my previous Patent No.908,313, dated December 29, 1908.

The object of my present improvements is to provide a cutter of the typeindicated, which will possess advantages in point of strength,convenience and ease in assembling the parts, and which will be moreaccurate and eflicient in operation, substantially as hereinafter fullyset forth.

In the drawingsFigure 1 is a perspective view of the cutter embodying mypresent improvements. Fig. 2 is a vertical sectlonal vlew ofthe devlce.Fig. 3 1s a horizontal sectional View, taken on the line :0m,

Fig. 2. Fig. 4- is a detail vertical sectional view, taken through theconnection between the standard and the stationary base. Fig. 5 is adetail vertical sectional view, taken through the connection between therevolving base and the stationary base. Fig. 6 is a detail horizontalsectional view, taken through the knife or cutting blade and showing theconnection therewith ofone of the arms which carries the blade. Fig. 7is a detail perspective view, illustrating the recessed edge of thecutting blade and the end of the arm which is received thereby.

Corresponding parts in all the figures are denoted by the same referencecharacters.

Referring to the drawings, 1 designates a horizontal base, whichsupports the'entire mechanism of the device and is stationary when inuse. The under side of this base is hollowed out, as at 2, and the baseis provided, at its rear portion, with an upwardly-projecting tubulararm or stud, 3, the bore of which, 4, extends entirely through from topto-bottom. This arm 3 is in true upright or vertical position withrelationto the horizontal plane of thebase 1, and it is provided in'itstop edge, at diametrically opposite sides, with recesses, as at 5 -5,extending through the walls of the tubular arm or stud and preferably ofcurved oifsegmental contour. y 6 designatesastandard, which rises fromthe base 1 and carries the knife or cutting blade mechanism and themeans for retaining the roll of paper at the top. Said standard ispreferably'in the form of a rod and of cylindrical contour, and itisdetachably connected with the base 1. The lower end, 7, of said standardcorresponds to and is received by the bore 4 of the tubular arm 3, andit projects within'the hollow space 2 at the under side of the base 1,said proj ecting terminal bottom end being'threaded, as at 8, andadapted to receive a shallow nut, 9, which is screwed up against theunderside of thebase 1. Immediately above its end portion 7, thestandard is provided with laterally-projecting pins or Studs 10101respectimly at diametrically opposite sides, which are adapted to bereceived by the respective recesses 55 in the top edge of the tubulararm or stud 3.

Thus, the nut 9 operates to clamp the pins portatio-n in kncck-downform,and for this 1 reason the connection of the standard with the base 1 isnot only detachable but is designed to be readily and convenientlyoperatable in assembling the'device in position for service. Theconnection as shown in my previous patent above referred to, in wh chthe standard has a threaded end screwed into a threaded opening in thebase, is dis.- advantageous, as it necessitatesthe turning of the entirestandard, and other forms of connection havebeen found imperfect, as 1they 'not only entail considerablediificulty in setting up the devicebut also do not positively insure the accurate and true verticalposition'of the standard. It is necessary, in

the efiectiveoperatio-n of this type of vertical paper cutters, that thestandard be in accurate or true vertical or perpendicular relation tothe horizontal plane of the stationary base 1, and in the previousmethods of attaching the standard to the base the conditions permittedsuflicient play to throw the operative parts of the device out of trueposition, especially in sizes adapted for a heavy roll of paper,weighing, for instance, lbs. In the improved construction as comprisedin my present invention, the detachable connection between the standardand base effects not only an absolutely true position of the standard,by reason of the seating of the lateral pins1010 inthe recesses 5-5 ofthe tubular arm or stud 3, but it also greatly simplifies the operationof assembling the device. In this connection, it is simply necessary,in'setting up the device in absolutely true position and ready forservice, to insert the lower end of the standardin the tubular arm 3until the lateral pins 10-10 are seated in the recesses 5--5 atdiametrically opposite sides, and then screw home the nut 9 to securelyretain the parts in relative position. The improved construction, forattachment of the standard to the base, also enables the'shipping of thedevice for transportation in only two knock-down pieces, one consistingof the stationary base with the revolving base which it carries, and theother consisting of the standard with the arms and cutting blade carriedthereby.

The stationary base carries a revolving base, 11, mounted substantiallyin the manner shown in my previous patent, the mounting being preferablyof ball-bearing construction. As shown, the stationary base 1 has anupwardly-projecting stud, 12, located the required distance from thestand ard 6 andforming a race channel, 14, for

the balls, 15, and the revolving base 11 is centrally provided on itsunder side with a bearing surface, 16, resting upon the balls. Therevolving base also has an upwardlyprojecting stud, 17, at the axis ofthe bearing, and the two bases 1 and 11 are connected in permanentrelationship by a headed pin, 18. passing downwardly through bores orperforations, 19-20, in the respective studs 12 and 17 of the bases andhaving its lower end bradded, as at 21, against the under side of thestationary base 1. This permanent connection betweenthe bases offectively retains the balls 15 and the operative relationship of thebasesin transpor- ,tation.

prevent loose rolls' of low grade paper from slipping down at the sidesof the base. Tlns improved construction enables the employment, of arevolving base of proper size with relation to the stationary base andwith respect to the position of the standard 6, such size being indiameter materially smaller than the stationary base, and at the sametime provides for effective operation with loose rolls of paper whichwould exceed the normal diameter or transverse area of the revolvingbase. The lateral extensions or lips 2222 are preferably arranged atdiametrically opposite sides of the revolving base, as shown. Thisimproved feature of the revolving base, in the application of the devicefor employment of loose rolls of low grade paper, avoids the necessityof enlarging the entire transverse area of the base and also avoids theenlargement of the dimensions between the projecting stud of the baseand the holding pin for the roll of.

paper at the top, which enlargement would be otherwise necessarvtoenable the placing of the roll of paper in position in the cutter, asthe roll must be tilted when being placed in position. The improvedconstruction whereby the revolving base is of less diametrical dimensionthan the Width of the roll of paper also afiords manifest advantages inthe operative service of the device with rolls of paper of anyqualitypvliether the paper is of fine grade and not liable to sllp downat the sides of the revolving base or whether the paper is of low gradeand is therefore liable to work loose and would slip down at the sidesof the base unless the extension lips 22 were provided.

It will be understood that the roll of paper, as shown at 23, rests uponthe revolving base 11 and is carried thereby, with the stud l7of thebase projecting upwardly within the lower end of the central bore of theroll, and that the roll is retained at its top by a pin, 24,projectingwithin the top end of the bore of the roll and insertiblymounted in a cylindrical socket, 25, at the outer end of an extension,26, which projects horizontally from the main vertical portion of thestandard 6 and at right angles thereto.

The cutting mechanism is carried by the standard 6, and comprises arms,2727, preferably two in number, which have a terminal eye, as at 28,surrounding the standard 6 and forming a bearing thereon for the arm.The arms 27 are preferably in strip form and carry'at their outer endsthe knife or cutting blade, 29. Said arms are supported in position, andtheir operation to cause the cutting blade to bear against thecircumference of the roll of paper is governed by, coiled springs, 30,which surround the standard 6 and have one end permanently attachedthereto, as at 31, and their mounted beneath the arm and its retainingend 33 projects at the top edge thereof, while the spring for the upperarm is arranged above the arm and its retaining end 33 projects at thelower edge of the arm. This reversed arrangement of the retainingsprings, with relation to the arms carrying the cutting means, ascomprised in my present improvements, effectively prevents spreading ofthe arms from their proper parallel re lationship and securely retainsthe same in true position, and it thus also efiiectively obviates anybinding of the bearing QSofthe arms upon the standard 6 which wouldresult if the arms should spread from their true position in parallelrelationship and at right angles to the vertical standard 6.

It is desirable, inthe type of vertical,

paper cutters to which mypresent invention relates, to employ a fine andthin blade for service as the knife or cutter. Heretofore, the blade hasbeen formed of a plate of nonresilient metal having a sharpened edge, asshown in my previous patent above mentioned. In my present improvements,the cutting blade, as shown at 29, is constituted by a thin sheet ofresilient metal, and to prevent bending of this fine thin blade in theknock-down transportation of the device, it is provided with alongitudinal groove or depression, as at 34, forming a projection or riband preferably formed by stamping the thin metal sheet, saidstrengthening groove or rib being preferably at approximately the centerof the transverse width of the blade. To further strengthen the thinblade, and obviate bending, its rear edge is curved or turned at anangle to its face, as at 35-, which curved edge serves as astrengthening rib in substantially the same manner as the groove and rib34, and in the preferred construction this curvededge 35' is turned in adirection opposite from the direction in which the rib 34 projects. Theconstruction as just described enables the, employment of a cuttingblade of high resiliency and with the necessary give in. operation,without liability to bending or damage in transportation. The curvedrear edge 35 also enables the effective attachment of the carrying andsustaining arms 27 27, to sustain the blade for resilient action in thecutting operation,

and for this purpose this edge is. recessed or cut out, as at 3636, toreceive the corresponding end portion, 37, ofthe arm 27, whichlattershoulders or abuts againstthe base of therecess, as at38, and'beyondsaid shoulder the end of the arm is extended, as at 39, to rest againstthe face of the blade beyondthe curved rear edge 35. This improvedconstruction enables the securing of the armto the blade with a singlerivet or brad,

as at 40, extending through the extension 39 i of the arm and the blade,this single fastening means being merely to secure the blade inconnection with the arm while the snug fit and embracing of the endportion of the arm within the recess 36 prevents any tendency of theblade to sag and serves-to maintain the blade in absolutely trueoperative position. w

The operation of the device, and the ad-.

vantages ofmy present improvements, will i be readily understood fromthe foregoing description.

Theimproved features of construction not only enhance the strength ofthe various parts. and the convenience and facility with which thedevice may be shipped in knockdown form and assembled in position foruse, but also secure that accuracy of position which is essential in avertical or perpendicular paper cutter of the type to which my inventionrelates. p

I do not desire to be understood aslimit 7 ing myself to the detailconstruction and arrangement of parts as herein shown and described, asit is manifest that variations and modifications therein may be resortedto, in the adaptation ofmy'invention' to varying conditions of use,without departing from the spirit and scope of my invention andimprovements. I thereforereserve the right to all such variations andmodifications as properly fall within the scope of my invention and theterms of the following claims. Having thus described my nvention, I

claim and desire to secure by Letters Patent:

1. In a vertical paper cutter of the class described, comprising astationary base carrying a revolving base for sustaining the roll ofpaper and atstandard projecting from the stationary baseand carryingthe.

cutting means operative with relation to said roll, a stationary basehaving an upwardly projecting tubular arm or studprovided in its topedge with recesses',astand--' ard having laterally projecting pins orstuds, the lower end of the standard being received witliinsaid tubulararmv and said pins or studs being seated in said edge re p ard inconnection with said base to clamp the pins or studs .1n said edgerecesses.

2. In a vertical paper cutter of the class 'cesses, and means forfastening said standdescribed, comprising a stationary base I carrying arevolving base. forsustaining the roll of paper and a standard proecting from the stationary base and carrying the cutting means operativewith relation to said roll, a stationary base having anupwardly-projecting tubular arm or stud provided in its top edge withrecesses, a standard having laterally projecting pins or studs, thelower end of the standard pro- 'jecting through said tubular arm andsaid pins or studs being seated in said edge recesses, and means uponthe lower terminal end of the standard for detachably fastening the samein connection with said base to clamp the pins or studs in said edgerecesses.

3. In a vertical paper cutter of the class described, comprising astationary base carrying a revolving base for sustaining the mountedhorizontal arms, whereby the piu rality of arms are preventedfromspreading from parallel relationship and binding of the arms uponthe standard is obviated.

4. In a vertical paper cutter of the class described, comprising astationary base can rying a revolving base for sustaining the roll ofpaper and a standard projecting from the stationary base and carryingthe cutting means operative with relation to said roll, a pair ofhorizontal parallel arms for carrying the cutting knife or blade andrespectively loosely mounted with bearings upon the standard, andsprings for sustaining'and retaining the arms in their hori- 'zontalposition and governing the operation thereof, said springs being carriedby the standard and having a projecting portion for retaining the arms,the spring for the lower arm being mounted beneath the arm andsupporting the same and having its retaining portion projecting over thetop edge thereof and the spring for the upper arm being mounted abovethe arm and having its retaining portion projecting beneath the loweredge thereof and operatively sustaining the same, whereby the springsare re versely arranged with relation to said independently anountedarms and prevent spreading of the arms from parallel relationship andbinding of the arms upon the standard is obviated.

5. In a vertical; paper cutter of the class described, comprising astationary base carrying a revolving base for sustaining the roll ofpaper and a standard projecting from the stationary base and carryingthe cutting means operative with relation to said roll, a cutting knifeor blade constituted by a thin sheet of resilient metal and having itsrear edge curved or turned at an angle to its face and provided withrecesses, and carrying arms having a bearing upon the standard, the endof said arms corresponding to and fitting in said recesses and beingprovided with an extension secured to the face of the resilient bladebeyond said rear edge thereof. 7

6. In a vertical paper cutter of the class described, comprisingastationary base carrying a revolving base for sustaining the roll ofpaper and'a standard projecting from the stationary base and carryingthe cutting means operative with relation to said roll, a cutting knifeor blade constituted by a thin sheet of resilient metal and providedwith a longitudinal groove or depression forming a projection or ribbeyond its cutting portion and adjacent its rear fastening edge, saidrear fastening edge-portion beyond said ribbeing curved or turned at anangle to the outer face portion of the blade and projecting in adirection opposite from the direction in which said longitudinal ribprojects, and carrying arms having a bearing upon the standard andconnected with said rear edge of the blade immediately beyond said rib.

7. In a vertical paper cutter of the class described, comprising astationary base carrying a revolving base for sustaining the roll ofpaper and a standard projecting from the stationary base and carryingthe cutting means operative with relation to said roll, a cutting knifeor blade constituted by a thin sheet of resilient metal and providedwith a longitudinal groove or depression forming a projection or rib inthe rear portion of the body of the resilient metallic sheet beyond itscutting portion and adjacent its rear fastening edge, said rearfastening edgeportion beyond said longitudinal ribbeing curved or turnedat an angle to the outer face portion of the blade, andspring-controlled supporting arms having a bearing upon the standard andconnected with said turned rear edge of the blade immediately beyondsaid rib.

In' testimony whereof I have signed" my name in the presence of thesubscribing witnesses.

MEYNARDIE NELSON.-

Witnesses:

M. J GRANT,

J. C. Snssonns.

Copies of this patent may be obtained for five cents each. by addressingthe Commissioner of Patents,

Washington, I). G.

